Arch Linux

cherio

Member

Registered: 2022-04-27

Posts: 34

admgpu spams journal when the monitor (HDMI) goes off

My workstation is plugged into a KVM (sharing the keyboard, mouse and monitor) and whenever I switch KVM to a different input, the workstation journal starts getting filled up with the following message:

Jun 14 12:47:29 HOST kernel: [drm] DMUB notification skipped due to no handler: type=NO_DATA

The message gets repeated every few seconds, saturating the journal.
The message shows up regardless of whether I start XFCE session or keep it hanging in the TTY.

The message stops whenever I switch KVM back to control the workstation, but resumes again, when KVM switches away to another source.

$ lscpu | grep 'Model name'
Model name:                              AMD Ryzen AI 9 HX 370 w/ Radeon 890M
$ uname -a
Linux HOST 6.15.2-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 10 Jun 2025 21:32:33 +0000 x86_64 GNU/Linux

This is a new workstation and I never had issues like this with my other Arch/AMD based computers.
I am looking for a way to approach this.